Per capita income. In 2009, U.S. per capita personal income I was $48,040. In 2012, it was $52,430. ( Source : data.worldbank.org.) Assume that the growth of U.S. per capita personal income follows an exponential model. I = 48 , 040 e 0.029148 t a. Letting t = 0 be 2009, write the function. b. Predict what U.S. per capita income will be in 2020. c. In what year will U.S. per capita income be double that of 2009?
Per capita income. In 2009, U.S. per capita personal income I was $48,040. In 2012, it was $52,430. ( Source : data.worldbank.org.) Assume that the growth of U.S. per capita personal income follows an exponential model. I = 48 , 040 e 0.029148 t a. Letting t = 0 be 2009, write the function. b. Predict what U.S. per capita income will be in 2020. c. In what year will U.S. per capita income be double that of 2009?
Solution Summary: The author calculates the exponential growths function of per capita personal income t year after 2009.
Per capita income. In 2009, U.S. per capita personal income I was $48,040. In 2012, it was $52,430. (Source: data.worldbank.org.) Assume that the growth of U.S. per capita personal income follows an exponential model.
I
=
48
,
040
e
0.029148
t
a. Letting
t
=
0
be 2009, write the function.
b. Predict what U.S. per capita income will be in 2020.
c. In what year will U.S. per capita income be double that of 2009?
2. (5 points) Let f(x) =
=
-
-
- x² − 3x+7. Find the local minimum and maximum point(s)
of f(x), and write them in the form (a, b), specifying whether each point is a minimum
or maximum. Coordinates should be kept in fractions.
Additionally, provide in your answer if f(x) has an absolute minimum or maximum
over its entire domain with their corresponding values. Otherwise, state that there is no
absolute maximum or minimum. As a reminder, ∞ and -∞ are not considered absolute
maxima and minima respectively.
Elementary Statistics: Picturing the World (7th Edition)
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